多宝山超大型铜矿床的成矿构造环境  

THE TECTONC ENVIRONMENTS OF METALLOGENESIS OF DUOBAOSHAN SUPERLARGE COPPER DEPOSIT

作　　者：尹冰川[1] 冉清昌[1] 

机构地区：[1]中国科学院矿床地球化学开放研究实验室,贵阳550002

出　　处：《矿物学报》1997年第2期220-224,共5页Acta Mineralogica Sinica

摘　　要：多宝山超大型铜矿床是我国典型的斑岩型矿床，主要产出于多宝山组岛弧建造和花岗闪长岩、花岗闪长斑岩中，成矿年龄为292～283Ma。根据地球物理异常及大量的基性和超基性岩体，以及通过对比两侧的岩石圈结构、古生物、结晶基底、成矿特征和地球化学特征，认为黑河一嫩江是一条重要的构造边界带，它是兴安和松嫩地块在早石炭世拼合、碰撞、造山隆起形成的。多宝山超大型铜矿床就是形成于两板块碰撞后隆起抬升构造环境的斑岩型铜矿床。The Duobaoshan superlarge copper deposit is a porphyry-type deposit dated at 292～283Ma and occurred in an arc formation of the Duobaoshan Group of Ordovician as well as in granodi-orite and granodiorite porphyry in Hency. Heihe-Nenjiang is an important structural boundary ac-cording to geophyslcal anomalies and a lot of basic-ultrabasic masses along the boundary, and bycontrasting lithospheric structure, paleobiology,crystal basement rock, metallogenic and geochemi-cal characteristics on both sides. It is a matching belt between the Xingan and Songnen blocks de-veloped in the Early carboniferous period. The Duobaoshan copper deposit was just formed in theorogenic uplift environment developed after the two blocks callided. It is of great significance fortectonic evolution and prospecting in northeastern China.

关 键 词：斑岩型铜矿床 构造环境 拼接带 铜矿床 成矿构造 

分 类 号：P618.410.5[天文地球—矿床学] P618.410.2[天文地球—地质学]